{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1526-1BB48-0MA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1526-1BB48-0MA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1526-1BB48-0MA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1526-1BB48-0MA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 24 VDC coil, screw-type terminals, 20 A rated for main contacts, IP20 front, snap-on DIN rail mounting.","salesMarkdown":"The main contacts are rated 20 A per NO and NC contact, and the coil pulls 24 VDC. That 24 VDC coil is common in PLC-driven panels — no need for an AC coil supply or separate rectifier. The auxiliary contacts switch up to 10 A at 24 VDC, 6 A at 230 VAC, and 3 A at 400 VAC, which covers most signal-level and small-load switching within the contactor itself. The contactor measures 85 mm high, 61 mm wide, and 101 mm deep — the S0 footprint. It occupies a single DIN-rail slot width (61 mm) and allows side-by-side mounting without derating, so you can pack multiple units in a row. Terminals are screw-type for the main circuit, accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) solid or stranded wire. That range covers typical motor and control wiring from 18 AWG to about 12 AWG. ## Environmental and operational limits The operating factor (duty cycle) is 0.8 initial, 1.1 full-scale — meaning it can handle continuous rated current with some margin at full load.","metaTitle":"Siemens SIRIUS 3RT1526-1BB48-0MA2 Power Contactor, S0, 24 VD","metaDescription":"Siemens SIRIUS 3RT1526-1BB48-0MA2 power contactor, size S0, 24 VDC coil, screw terminals, 20 A main contacts, IP20 front. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"101 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"61 mm","at DC":"13 ... 40 ms","Height":"85 mm","Maximum":"2 000 m","Arcing time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.8","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Full-scale value":"1.1","Mounting position":"with vertical mounting surface +/-180° rotatable, with vertical mounting surface +/- 30° tiltable to the front and back","Size of contactor":"S0","Product brand name":"SIRIUS","Product designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 440 V rated value":"1 A","Instantaneous Contact":"3","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","per NC contact rated value":"20 A","per NO contact rated value":"20 A","Of Main Circuit Rated Value":"6 kV","at maximum AC-1 rated value":"10 mm²","Of Auxiliary Circuit Rated Value":"6 kV","at DC at 24 V maximum permissible":"0.016 A","Closing power of magnet coil at DC":"5.6 W","Holding power of magnet coil at DC":"5.4 W","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 35 A","at 24 V per NC contact rated value":"35 A","at 24 V per NO contact rated value":"35 A","Protection against electrical shock":"finger-safe","at 110 V per NC contact rated value":"7.5 A","at 110 V per NO contact rated value":"15 A","at 220 V per NC contact rated value":"1.5 A","at 220 V per NO contact rated value":"3 A","at 230 V per NC contact rated value":"5.5 kW","at 230 V per NO contact rated value":"5.5 kW","at 400 V per NC contact rated value":"11 kW","at 400 V per NO contact rated value":"11 kW","at 440 V per NC contact rated value":"0.135 A","at 440 V per NO contact rated value":"0.27 A","at AWG conductors for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","Reference code acc. to DIN EN 81346-2":"Q","Number of NC contacts for main contacts":"2","Number of NO contacts for main contacts":"2","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number of poles for main current circuit":"4","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","Type of voltage of the control supply voltage":"DC","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000","Power loss [W] at AC-3 at 400 V for rated value of the operating current per conductor":"1.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=202301&mlfb=3RT1526-1BB48-0MA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1526-1BB48-0MA2/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the main and auxiliary contacts?","answer":"Main contacts are rated 20 A per NO and NC. Auxiliary contacts switch 10 A at 24 VDC, 6 A at 230 VAC, and 3 A at 400 VAC. The coil is 24 VDC."},{"question":"What mounting options does this contactor support?","answer":"It mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 50022. The S0 frame size (85 x 61 x 101 mm) fits a single DIN slot, and side-by-side mounting is allowed without derating."},{"question":"What wire sizes does the screw terminal accept?","answer":"The main circuit screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) solid or stranded wire."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1526-1BB48-0MA2","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RT1526-1BB48-0MA2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}